Supplying, Stacking and mechanical loading of 56000 Cum 65mm gauge machine crushed hard stone track ballast as per RDSO/ LKO ' s Ballast Specification for Track Ballast No. IS/ RDSO- GE/ 0001: 2023 February 2023 & CE ' s Circular No. 257 in PQN Ballast Depot in the section of ADEN- PRG. Estt. No 90/ 2023, 98/ 2023, 96/ 2020 and 349/ 2018.